Halo: Reach Data Pads

When viewing a data pad, you'll hear what sounds like reversed audio playing the background. After reversal, the audio reveals a number of phrases being spoken by an entity. The phrases heard are played randomly.

Mysterious content

Some text transcriptions from low-resolution images may not be accurate, so if you think you have a more accurate reading, please share.

Hidden panel

On the level The Package, there is a keypad entry panel just outside the bounds of the level after you find the tank. Proceed around the left side of the rocks into the water. Unlike decorative geometry, this panel does prompt to press X to activate. (source, haloreachplanet.com [1] )

What does it activate?

Radio chatter

On the level Overlook, as discovered in the beta version, on the radio can be overheard a communications exchange between "Blue Delta" and "Dragon X-Ray". (listen:[2])

Transcription (ordered):

Blue Delta, this is Dragon X-Ray, we are on the ground and three nights out from the objective, over.

Dragon X-Ray, be advised that you are the only UNSC ground asset in that grid.

Ringcode Variant 1

Ringcode Variant 2

Ringcode Variant 3

Ringcode Legendary Figurine

On the backside of the legendary edition Noble Monument figurine is a ringcode in the same format as those seen above. This ringcode may offer a little more insight into the structure of the ringcodes themselves, with a visible grid pattern in which segments are filled or empty.

This ringcode is the same as variant #2

Ringcode Legendary Box

On opposite sides of the legendary box are two ringcodes, on (depicted) labels stating delivery origin and destination - Reach and Earth.

Posters and decals

Also scattered around the walls of Winter Contingency are large posters and round letter/dot decals. They may not serve a practical purpose, but they are documented here just in case.

Misc content

Dave

In the lower left of the HUD, there is a string of binary:

01000100011000010111011001100101

This converted to decimal spells "Dave"

Adjutant Reflex?

At one point I noticed a fan grate that bore an eerily striking resemblance to the Chrysopteron, the glyph representing the Forerunner AI Adjutant Reflex.

2D Crate barcode

On a closeup of the roundish tanks is a barcode with numbers barely visible.

Transcription:

20 279403050530

1730[343206]3039][332]

Monitor screens

Some repeated monitor textures include very low resolution text.

General information will be updated at intervals between 3 and 7 units.

Normal operational levels to remain between 40 and 1100 degrees.

Information 123384.4
92939*)
948340423.2034

Pioneer matrix operational, information will be conveyed in order received

Please be (?) as variables may determine (?)

Fun stuff

In one level a fast food kiosk has menus on display:

Siege of Madrigal (and Never Surrender)

Every Halo title from Bungie has a location where the tune Siege of Madrigal can be heard in the distance. Halo: Reach takes it to a new level. The easter egg can be found on the level New Alexandria. A hidden panel first activates Never Surrender, and a second panel elsewhere activates Siege of Madrigal. (source: HaloReachPlanet.com [3])